Turbine



H. F. SCHMIDT. TURBINE.

APPLICATION FILED OCT. I8, I917.

Patented Mar. 30,1920.

INVENTOR.

ATTORNEYS.

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HENRY F. SCHMIDT, 0F PITJIEEURGilEl, .PENNEl'iZ'Id/"ANIA, .AESIGNQR 1 0 VTESTINGHOUSE ELECTRIC 6t fMJtNUFAGTllUfB/ING 130., CORPURATIQIN (ll? PENNQ'YL'VANIA.

Application filed Gctober 15, 191?.

To aZZ whom it may concern:

lle it known that l, liliiuur l Sonatina, a citizen oi the United States, and a resident of Pittsburgh. in the county of All gheny and State of Pennsylvania, have made a new and uset'ul lnvention in l urbines, of which the following is a specification.

This invention relates to turbines and has for an object to produce a turbine which is more compact than other turbines of the same type now in use and known to me.

A. further object is to produce a turbine in which. the motive fluid is delivered to the blades or buckets at a substantially constant angle by the motive fluid delivery nozzles or devices.

These and other objects are attained. by means of a turbine embodying the features be *ein described and illustrated in the drawings accompanying and forming a part hereof.

ln the drawings: Figure 1 is a diagrammatic sectional view, along the line l--1 of Fig. 2, of a turbine rotor and a co'riperating nozzle and redirecting chamber constructed and arranged in. accordance with my invention.

Fig. 2 is a sectional view alone; the line 2-2 of Fig. 1.

Fig. 3 is a diagrammatic representation oi. a part of the apparatus shown in Fig. 1.

Fig. l is a perspective view oil. a part of the nozzle block.

lhe illustrated embodiment of my invention includes a turbine rotor or wheel 5,

which is shown mounted on the overhangend of a shaft 6. wheel. is provided with an. overhanging or laterally pro iecting: peripheral flange provided on its inner peripheral. face 9 with an annular row of imuulse buckets 8. The buckets may be at the Pelton tyne and. as illustrated. are approximately semi-circular in term. each bucket being; milled or otherwise form ed in the inner peripheral face of the flange 7 and so arranged that its admission edge or lip overlaps or terms one wall. of an adjacent bucket. Motive fluid. hereinafter termed steam, is delivered to the buckets 8. by means of a divergent nozzle 11, which is arranged to so deliver steam to the buckets 8 that the steam enters ch bucket at one side of the center of the bucket. is reversed in the direction of its flow in bassinet through the bucket and is discharged from the other side Specification oi! Letters Patent.

sage through them.

Patented Mar. 30, 1920.

Elerial No. 19?,331.

of the bucket. l have also illustrated a redirecting chamber 12 which receives the steam discharged from the buckets, redirects it by reversing its flow in a plane substantially at right angles to the original plane of reversal oi the steam and also delivers the redirected steam to the buckets so that it traverses the buckets a second time and in a reverse direction from. that oi. its first pas I have illustrated the nozzle 11 and the redirecting chamber 19. termed. Within a stationary nozzle block 10, which is so located that it is overhung or surrounded. by the flange 7. The chamber 12 is also provided with a plurality 0t stationary directing vanes 1% so arranged as to direct the How through the chamber 12 and to prevent the formation of eddy cur rents in the chamber. The chamber 12 and the directing vanes 152i are arranged so as to direct the steam. into the buckets 8 at points farther along the row of buckets, relative to the location of the nozzle ll.

l Vith the type of redirecting; chamber illustrated, the steam is redirected and is delivered into the buckets on the side opposite to the initial inlet side; consequently the steam is exhausted from the buckets at the side on which the nozzle 11 is located. In the illustrated embodiment the steam is exhausted from the buckets adj acent to the tree edge of the bucketsupporting flange 7. In Fig. .3, I have diagrammatically illustrated by means of arrows the path of the steam throush the nozzle 11., the buckets 8, the redirecting chamber 12. and finally through the buckets 8 a second time.

shown in Fig: 2. the row of buckets 8 is concave in relation to the nozzle block 10; conseoueutlythe divergence of the stream oi steam issuing from the nozzle 11 is compensatod tor by the curvature of the row area to discharge the expanded steam issuor blades formed on'the outer periphery of the wheel. For marine work the sets of buckets may face 1n opposite directions so that one set may be employed for reverse operation.

' While I have illustrated and described but oneembodiment of my invention, it will be apparent to those skilled in the art that various changes, modifications, additions, and omissions maybe made inthe apparatus illustrated withoutdeparting from'the spirit 7 and scope of the invention, as set forth by the appended claims.

.VVhat I' claim is:

1 1. A'turbine comprising a rotor having an annular-grin'i supported .at one side only,

rperip heral buckets on an inner peripheral facejof the rim, a nozzle for expanding motive fluid and for delivering the fluid to said Tbuckets, a redirecting chamber located within the confines of the rotor for receiving the fluid discharged from the side of the buckets adjacent the supported side of the rim and for redirecting the fluid into said buckets, said chamber being so located that the fluid traversing it is delivered to one'side of the peripheral buckets and passes laterally through the buckets.

2. A turbine comprising a rotor having an annular rim supported at one side only, peripheral buckets mounted on the inner peripheral face of the rim, a nozzle for delivering motive fluid to the buckets, said nozzle being'so located that the fluid issuing therefrom is delivered to each bucket on one side of the center of thebucket remote from the supported side, of the rim, is reversed within the bucket and is discharged in a substantially tangential stream from the other side of the bucket, and a redirecting chamber for receiving fluid issuing from the buckets, and for redirecting it into said buckets, said chamber being arranged to reverse the flow of fluid in a plane substantially at-right'angl'eS to the plane of reversal within-the buckets. V

3. In combination in a turbine, an overhanging rotor having -a laterally projecting annular flange, an annular row of peripheral buckets on the inner peripheral face-of the flange, a nozzle block located within the confines of the overhanging flange and having a fluid delivery nozzle and a redirecting chamber formed therein, said nozzle being so located with relation to said buckets that the fluid issuing therefrom is delivered to each bucket on one side of the center thereof, is reversed within the bucket and is discharged in an approximately tangential stream from the other side of the bucket into the redirecting chamber, said redirecting chamber being so arranged as to reverse the flow of the fluid in aplane substantially at right angles to the plane of reversal within the buckets and to redeliver the fluid to the side of the buckets from which the fluid in initially discharged.

at. In combination in a turbine, an overhanging rotor element having an axially projecting overhanging annular flange, an annular row of peripheral buckets on the inner peripheral face ofthe flange, a nozzle within the confines of the overhanging flange for delivering motive fluid to said buckets, said nozzle being so located with relation to said'buckets that the fluid issuing therefrom is delivered to each bucket adjacent the edge of the flange and one one side of the center thereof, is reversed within the bucket and is discharged in an approximately tangential stream from the other side thereof. a redirecting chamber located within the confines of the annular flange and arranged to receive the fluid initially discharged from the buckets to reverse the flow of the fluid in a plane approximately at right angles to the plane of reversal. within the bucket. and to redeliver the fluid to the side of the buckets from which it was initially discharged.

5. In combination in a turbine, a rotor element including an annular rim, an annular row of peripheral buckets mounted 011 the inner peripheral face of the rim, a nozzle within the confines of the rim and so located with relation to the buckets that fluid issuing therefrom is delivered to each bucket on one side of the center thereof adjacent the overhanging edge, is reversed within the bucket and is discharged in an approximately tangentialstream from the other side of the bucket into a redirecting chamber, a, redirecting chamber located within the confines of the rim and arranged to receive fluid initially discharged from the buckets to reverse the flow of fluid in a plane approximately at right angles to the plane of the reversal within the buckets and to redeliver the fluid to the side of the buckets from which it is initially discharged.

'6. In combination in a turbine, a rotor element comprising a shaft, a disk mounted on the end of the shaft and having-an annular flange projecting axially of the disk, an annular row of peripheral buckets mounted on the inner peripheral face of the flange, a nozzle located within the confines of the flange and so located with relation to the buckets that the fluid issuing therefrom is delivered to each bucket at the side farthest from said disk, is reversed in the direction of its flow within the bucket and is delivered from the side of the bucket adjacent said disk, a redirecting chamber located within the confines of the flange and between the nozzle and the disk for receiving fluid initially discharged from said buckets, tor reversing its flow in a plane substantially parallel to the plane oi said disk and for redeli'vering it to the bucket on the sides adjacent said disk.

7. The combination with a turbine rotor having a flange extending axially from the rotor disk and provided with turbine buckets on its inner periphery adapted to receive motive fluid on one side of the buckets and discharge it substantially tangentially from the other side, of a nozzle having a redirecting channel, and mounted Within the confines of the flange adapted to discharge fluid into the buckets at the side remote from the said disk, and redirect the fluid discharged from the side of the buckets adjacent the disk to the same side of the buckets whereby the fluid is caused to ultimately discharge from the side of the buckets remote from the said disk.

8. The combination with a turbine rotor having an annular flange extending axially from the rotor disk and provided with turbine buckets on its inner periphery adapted to receive motive fluid at one side of the bucket and discharge it substantially tangentially from the other side thereof, of

means for discharging motive fluid into the side of bucket remote from the said disk, and redirecting the fluid. exhausted from the opposite side of the said bucket to a side of another bucket adjacent the said disk, whereby the fluid is exhausted from the side of the second basket remote from the said disk.

In testimony whereof, I have hereunto subscribed my name this 17th day of October, 1917.

HENRY F. SCHMIDT; l/Vitness:

C. W. MOGHEE. 

